Enum OpaqueReason 

pub enum OpaqueReason {
    UnknownPattern,
    NonDeterministic,
    CrossTupleState,
    SideEffecting,
    Continuous,
}

Why the analyzer marked a predicate Opaque. Spec §10.9.3.

Variants

UnknownPattern

Predicate shape isn’t in the §10.9.5 recognizer catalog.

NonDeterministic

Predicate references a non-deterministic Polydat function (PRNG draw, time-of-day, etc.). Detected conservatively — any function call we don’t recognize as deterministic falls here.

CrossTupleState

Predicate depends on previously-emitted tuples. Not expressible in current GK; reserved for future use.

SideEffecting

Predicate has observable side effects.

Continuous

Predicate references one or more continuous-cardinality coordinates. Continuous-coord predicate analysis is deliberately deferred per spec §14.

Trait Implementations

impl Clone for OpaqueReason

fn clone(&self) -> OpaqueReason

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OpaqueReason

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OpaqueReason

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for OpaqueReason

impl PartialEq for OpaqueReason

fn eq(&self, other: &OpaqueReason) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for OpaqueReason

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for OpaqueReason